Hi Heather, I would also be interested in information pertaining to the effects of cemetery burning. It would seem logical to me that the long term effect of burning in cemeteries may ultimately adversely impact the headstones. The variety of stone materials are already weathering at different rates as a result of normal climate changes. It follows then that artificially induced severe temperatures and the accelerated rate of temperature change coupled with any chemical residues of burned material may hasten deterioration. Or is there some evidence that the results of burning tend to inhibit headstone weathering? This is an interesting topic and one worthy of discussion by the members of this cemetery preservation list. I recall once reading the cautionary statements on the use of cleaning chemicals on marble and granite floor materials. I believe the manufacturer advised against the use of any harsh cleaning fluids and even heavily chlorinated waters? Surely there have been intensive studies of similar materials utilized in the building or other industries that could be utilized to compare and possibly predict the long term effect burning activity may have on the stone materials found in 19th century pioneer cemeteries? In this wacky world of ISO standards and extensive testing of construction materials, I am confident that there have been copious thermal tests conducted on these types of stone done by someone. Indiana University is located right in the heart of "stone country" and would be a good place to start an inquiry. I was hoping someone on the list would broach this subject from the perspective of the possible effects on the headstone inscriptions. In many cases, the stones in these early cemeteries offer a peek into the pioneer history of the region not recorded elsewhere. If the carvings are allowed to deteriorate beyond recognition (or if this process is actually accelerated), we may be inadvertently increasing the loss of valuable historical and genealogical information not found elsewhere. Thanks in advance for forwarding your information on this important topic. Regards, - Rich Green Historic Archaeological Research 4338 Hadley Court West Lafayette, IN 47906 Office: (765) 464-8735 Home: (765) 464-8095 http://www.har-indy.com